ra.util

Class OperatingSystemProxy

java.lang.Object

ra.util.OperatingSystemProxy

public class OperatingSystemProxy
extends java.lang.Object

Proxy com.sun.management.OperatingSystemMXBean.

Author:

Ray Li

Constructor Summary

Constructors

Constructor and Description
OperatingSystemProxy() Initialize.

Method Summary

Modifier and Type	Method and Description
long	getCommittedVirtualMemory() Returns the amount of virtual memory that is guaranteed to be available to the running process in bytes, or -1 if this operation is not supported.
long	getFreePhysicalMemorySize() Returns the amount of free physical memory in bytes.
long	getFreeSwapSpace() Returns the amount of free swap space in bytes.
double	getProcessCpuLoad() Returns the CPU percent used by the process.
long	getProcessCpuTime() Returns the CPU time used by the process on which the Java virtual machine is running in nanoseconds.
double	getSystemCpuLoad() Get system CPU status.
long	getTotalPhysicalMemory() Returns the total amount of physical memory in bytes.
long	getTotalSwapSpaceSize() Returns the total amount of swap space in bytes.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OperatingSystemProxy

public OperatingSystemProxy()

Initialize.

Method Detail

getCommittedVirtualMemory

public long getCommittedVirtualMemory()

Returns the amount of virtual memory that is guaranteed to be available to the running process in bytes, or -1 if this operation is not supported.

Returns:

virtual memory

getFreePhysicalMemorySize

public long getFreePhysicalMemorySize()

Returns the amount of free physical memory in bytes.

Returns:

memory size

getFreeSwapSpace

public long getFreeSwapSpace()

Returns the amount of free swap space in bytes.

Returns:

swap space

getSystemCpuLoad

public double getSystemCpuLoad()

Get system CPU status.

Returns:

When get no CPU status will return -1.0.

getProcessCpuTime

public long getProcessCpuTime()

Returns the CPU time used by the process on which the Java virtual machine is running in nanoseconds.

Returns:

When get no CPU time will return 0.

getProcessCpuLoad

public double getProcessCpuLoad()

Returns the CPU percent used by the process.

Returns:

When get no CPU loading will return -1.0 .

getTotalPhysicalMemory

public long getTotalPhysicalMemory()

Returns the total amount of physical memory in bytes.

Returns:

memory

getTotalSwapSpaceSize

public long getTotalSwapSpaceSize()

Returns the total amount of swap space in bytes.

Returns:

memory